MANCHESTER UNITED may have signed sponsorship deals worth more than £1billion this summer but they are understood to have cooled their interest in Arturo Vidal because of Juventus's £35million valuation.

Manchester United have cooled their interest in £35m rated Arturo Vidal[GETTY]

United's record breaking £750m 10-year kit deal with adidas - confirmed yesterday - follows hard on the heels of the start of their £350m shirt sponsorship agreement with Chevrolet.

And it underlines their continued commercial pulling power despite their worst season for a quarter of a century and failure to qualify for the Champions League for the first time since the mid-1990s.

But after totting up a £136m transfer market expenditure over the last 18 months when they have paid premium prices for Wilfried Zaha, Marouane Fellaini, Juan Mata, Ander Herrera and Luke Shaw, United believe Juve's asking price for Chile midfielder Vidal is too high.

With Real Madrid-bound Toni Kroos and Chelsea new boy Cesc Fabregas apparently not wanted by Van Gaal, United will now turn their attentions elsewhere for a new midfielder - unless Juve drop their price.

United's new deal kit deal is worth £75m a season over the next 10 years and will treble the £24m they earn from their current contract with Nike, which will end next summer after 13 years.

It is also worth far more a season than adidas's £31m-a-season deal with Real Madrid, the previous biggest in world football.

United have secured the most lucrative kit deal in football history [AP]

And the huge sum involved is only £40m less than the Glazer family paid to buy United in May 2005.

The club said in a statement: "Manchester United has reached a 10-year agreement with adidas for a global technical sponsorship and dual branded licensing deal for a minimum guarantee of £750m, subject to certain adjustments, beginning with the 2015/2016 campaign."

The "certain adjustments" are understood to be clauses that will mean adidas will pay a reduced amount if United fail to qualify for the Champions League.

Adidas, who beat competition from US brands Warrior - kit-makers of Liverpool - and Under Armour, justified their investment by claiming they will make £1.5bn from shirt sales over the decade of the deal.

Their group chief executive Herbert Hainer said: "Our new partnership with Manchester United clearly underlines our leadership in football and will help us to further strengthen our position in key markets around the world.

"At the same time, this collaboration marks a milestone for us when it comes to merchandising potential. We expect total sales to reach £1.5bn during the duration of our partnership."

The deal renews United' association with adidas who produced their kit throughout the 1980s until the 1991-92 season. The German firm produced the kit for both Germany and Argentina in Sundays' Word Cup final and have added United to a club portfolio that already includes Chelsea, Bayern Munich, AC Milan and Flamengo.

Adidas has not given any details about the design of the new strip but said they may look to the United kits of the 80s and early 90s for inspiration

Nike released a statement last week revealing they had pulled out of negotiations because of the figures being demanded.

There was more good news for United with the feel-good factor created by the appointment of Van Gaal ensuring that all 55,000 season tickets have been snapped up by early July for the first time since Old Trafford became a 76,000 capacity stadium in 2006.

While Van Gaal does not need a break after guiding Holland to third place in the World Cup, striker Robin van Persie admits he needs to take the full three weeks he is entitled to take off following the tournament and will miss the club's pre-season tour in the USA.

"I need the three weeks' break," he said. "The World Cup has been heavy going for me. I gave everything I had in every single game. That was it - I had nothing left. We worked really hard at the finals and we are like lemons that have been squeezed dry."

Van Persie missed half of United's games last season with a succession of injuries and Van Gaal said: "We rebuilt Robin completely before the finals. If you take into account how far he has come and what he has achieved, you have to pay him the highest compliments."